C09K 2205/00
Aspects relating to compounds used in compression type refrigeration systems
C09K2205/00 (Aspects relating to compounds used in compression type refrigeration systems) appears on 1,653 US grants and 1,947 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,653
- Published applications
- 1,947
- Assignees
- 348
- Inventors
- 1,612
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 18 | 0 |
| 1991 | 32 | 0 |
| 1992 | 13 | 0 |
| 1993 | 28 | 0 |
| 1994 | 18 | 0 |
| 1995 | 34 | 0 |
| 1996 | 36 | 0 |
| 1997 | 52 | 0 |
| 1998 | 55 | 0 |
| 1999 | 22 | 0 |
| 2000 | 32 | 0 |
| 2001 | 40 | 12 |
| 2002 | 30 | 24 |
| 2003 | 46 | 34 |
| 2004 | 19 | 33 |
| 2005 | 23 | 43 |
| 2006 | 19 | 34 |
| 2007 | 26 | 38 |
| 2008 | 23 | 38 |
| 2009 | 25 | 47 |
| 2010 | 16 | 56 |
| 2011 | 37 | 71 |
| 2012 | 27 | 78 |
| 2013 | 37 | 71 |
| 2014 | 52 | 75 |
| 2015 | 67 | 101 |
| 2016 | 54 | 119 |
| 2017 | 92 | 110 |
| 2018 | 91 | 117 |
| 2019 | 93 | 107 |
| 2020 | 93 | 152 |
| 2021 | 79 | 130 |
| 2022 | 81 | 120 |
| 2023 | 67 | 102 |
| 2024 | 45 | 87 |
| 2025 | 51 | 85 |
| 2026 | 48 | 63 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2205/10ComponentsIndexing code1,434
- C09K 2205/22All components of a mixture being fluoro compoundsIndexing code647
- C09K 2205/40Replacement mixturesIndexing code342
- C09K 2205/32The mixture being azeotropicIndexing code323
- C09K 2205/24Only one single fluoro component presentIndexing code246
- C09K 2205/34The mixture being non-azeotropicIndexing code61
Recent patents
- Compositions and uses of trans-1,1,1,4,4,4-hexafluoro-2-butene and 1,1-difluoroethane (R-152A)15 Sep 2026US 12,734,388 B2The Chemours Company Fc, LLC
- Cryosurgery coolant delivery system and method of preparing and using the same8 Sep 2026US 12,727,929 B2Cool Renewal, LLC
- Method for producing purified trans-1,2-difluoroethylene (HFO-1132(E)) and/or 1,1,2-trifluoroethylene (HFO-1123)8 Sep 2026US 12,729,172 B2Daikin Industries, Ltd.
- Composition containing refrigerant, and method for stabilizing composition containing refrigerant8 Sep 2026US 12,729,331 B2Daikin Industries, Ltd.
- Sterically hindered hydrofluoroolefins with dipole moment and their blends with sterically hindered-olefins as refrigerants for high temperature heat pumps and working fluid for organic Rankine cycles8 Sep 2026US 12,729,332 B2Carbon Ventures, LLC
- Compositions8 Oct 2026US 2026/0308433 A1
- Purge device and production method for separation membrane1 Oct 2026US 2026/0295514 A1Mitsubishi Heavy Industries, Ltd.
- Compositions1 Oct 2026US 2026/0297407 A1
- Hfo-1234ze and hfo-1234yf compositions and processes for producing and using the compositions24 Sep 2026US 2026/0285786 A1The Chemours Company Fc, LLC
- Compositions comprising z-1,1,1,4,4,4-hexafluoro-2-butene and uses thereof3 Sep 2026US 2026/0258214 A1The Chemours Company Fc, LLC
Most cited
By later US patents
- Refrigeration lubricants168US 4,755,316 AAllied-Signal Inc. · 1988
- Halocarbon blends for refrigerant use112US 4,810,403 AE. I. Du Pont de Nemours and Company · 1989
- Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluoroethane102US 5,182,040 AE. I. Du Pont de Nemours and Company · 1993
- Variable load refrigeration system particularly for cryogenic temperatures102US 6,076,372 APraxair Technology, Inc. · 2000
- Hydrocarbon-halocarbon refrigerant blends99US 4,482,465 APhillips Petroleum Company · 1984